WO2018202083A9 - Procédé et dispositif de rapport de marge de puissance - Google Patents

Procédé et dispositif de rapport de marge de puissance Download PDF

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Publication number
WO2018202083A9
WO2018202083A9 PCT/CN2018/085471 CN2018085471W WO2018202083A9 WO 2018202083 A9 WO2018202083 A9 WO 2018202083A9 CN 2018085471 W CN2018085471 W CN 2018085471W WO 2018202083 A9 WO2018202083 A9 WO 2018202083A9
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WIPO (PCT)
Prior art keywords
value
calculating
power
average
terminal
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PCT/CN2018/085471
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English (en)
Chinese (zh)
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WO2018202083A1 (fr
Inventor
纪刘榴
任海豹
秦龙
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华为技术有限公司
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Priority to EP18795154.6A priority Critical patent/EP3614750B1/fr
Publication of WO2018202083A1 publication Critical patent/WO2018202083A1/fr
Priority to US16/673,509 priority patent/US10856274B2/en
Publication of WO2018202083A9 publication Critical patent/WO2018202083A9/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and an apparatus for reporting power headroom.
  • the power headroom (PH) is the difference between the maximum transmit power allowed by the terminal and the required transmit power, which can reflect how much transmit power the terminal can use in addition to the required transmit power.
  • the terminal reports the PH to the network side, and the network side can use the PH as a reference for allocating resources to the terminal. For example, when the PH value is negative, it indicates that the required transmit power has exceeded the maximum transmit power allowed by the terminal, and the network side can reduce the bandwidth resources allocated to the terminal; when the PH value is positive, it indicates that the maximum transmit power allowed by the terminal can be To bear the power required for current information transmission, the network side can allocate more bandwidth resources to the terminal.
  • the embodiment of the present application provides a method and a device for reporting power headroom, so as to improve the accuracy of PH reporting.
  • a method for reporting a power headroom including: calculating, by a terminal, a power headroom (PH) on a subframe of a serving cell, and reporting a power headroom report (PHR).
  • the terminal uses K beams or groups of beams to transmit on the subframe of the serving cell, where K is a positive integer greater than or equal to 2, and the terminal calculates the power headroom including:
  • the PHR reported by the terminal includes:
  • the reference PH value is a PH value of the K1 PH values
  • the offset value is an offset value of the other PH values of the K1 PH values with respect to the reference PH value.
  • the reference PH value is the reference PH value
  • the offset value is the offset value of the K1 PH values from the reference PH value;
  • the beam level power control parameter includes one or more of the following parameters: a nominal power P 0 , a path loss adjustment factor ⁇ , a path loss PL c , a power offset value ⁇ TF, c (i), and a power adjustment value.
  • f c (i) and the transmission bandwidth M c (i).
  • the terminal calculates a PH according to a first parameter of the K beams or a beam set, wherein the first parameter is a nominal power P 0 , a path loss adjustment factor ⁇ , a path loss PL c , and a power offset value ⁇ TF, c (i), one of the power adjustment value f c (i) and the transmission bandwidth M c (i).
  • the first parameter is a nominal power P 0 , a path loss adjustment factor ⁇ , a path loss PL c , and a power offset value ⁇ TF, c (i), one of the power adjustment value f c (i) and the transmission bandwidth M c (i).
  • the terminal calculates the PH according to the first parameters of the K beams or the beam group, including: calculating an average value of the first parameters of the K beams or the beam groups, where the average value includes a decibel dB average value or a linear average value;
  • the pH is calculated from the calculated average value.
  • the terminal calculates the PH according to the first parameters of the K beams or the beam group, including: calculating a sum of the first parameters of the K beams or the beam groups, where the sum includes a sum of the values of the dB values or a linear value; Calculated and calculated PH.
  • the terminal calculates the PH based on a plurality of parameters of the K beams or beam groups, wherein the plurality of parameters are a nominal power P 0 , a path loss adjustment factor ⁇ , a path loss PL c , and a power offset value ⁇ TF,c (i), power adjustment value f c (i), and some or all of the parameters in the transmission bandwidth M c (i).
  • the plurality of parameters are a nominal power P 0 , a path loss adjustment factor ⁇ , a path loss PL c , and a power offset value ⁇ TF,c (i), power adjustment value f c (i), and some or all of the parameters in the transmission bandwidth M c (i).
  • the terminal calculates the PH according to multiple parameters of the K beams or the beam group, including the following methods:
  • the average value is calculated as PH; or,
  • a PH reporting device including means or means for performing the various steps of the above methods.
  • a reporting device providing a PH comprising at least one processing element for storing programs and data, and at least one processing element for performing any of the above methods .
  • a program is provided that, when executed by a processor, is used to perform any of the above methods.
  • a program product such as a computer readable storage medium, can also be provided, including the program.
  • the embodiment of the present application provides a method and a device for reporting power headroom, and considers the influence of the introduction of multi-beam transmission on the PH, thereby calculating and reporting the PH more accurately, which is beneficial to improving scheduling decisions on the network side and improving communication performance.
  • a method for reporting a power headroom including: the terminal calculating a PH on a subframe of a serving cell, and reporting the PHR.
  • the terminal supports nu time-frequency resource configuration, where nu is a positive integer greater than or equal to 2, and the terminal calculates PH including:
  • the PH is calculated for the nu1 time-frequency resource configuration respectively, and nu1 PH values are obtained, where nu1 is less than or equal to nu.
  • the PHR reported by the terminal includes information about the PH value calculated according to the time-frequency resource configuration level power control parameter of the nu time-frequency resource configuration.
  • the PHR includes the information of the nu1 PH values calculated above.
  • the PHR includes information of a reference PH value and a value of an offset value, wherein the reference PH value is a PH value of nu1 PH values, and the offset value is nu1 PH values, and other PH values are relative
  • the offset value of the reference PH value has nu1-1 offset values at this time; or the reference PH value is the reference PH value, and the offset value is an offset value of nu1 PH values relative to the reference PH value.
  • the time-frequency resource configuration level power control parameter includes one or all of the following parameters: a nominal power P 0 (or P O ), and a transmission bandwidth M c (i).
  • the terminal calculates the PH according to a first parameter of the nu time-frequency resource configurations, wherein the first parameter is one of a nominal power P 0 (or P O ) and a transmission bandwidth M c (i).
  • the terminal calculates the PH according to the first parameter of the nu time-frequency resource configuration, including: calculating a sum of the first parameters of the nu time-frequency resource configurations, where the sum includes a sum of the dB values or a linear value; Calculated and calculated PH.
  • the terminal calculates a PH according to a plurality of parameters configured by nu time-frequency resources, wherein the plurality of parameters are a nominal power P 0 (or P O ) and a transmission bandwidth M c (i).
  • the terminal calculates the PH according to multiple parameters configured by the nu time-frequency resources, including the following methods:
  • a PH reporting device including means or means for performing the various steps of the above methods.
  • a reporting device providing a PH comprising at least one processing element for storing programs and data, and at least one processing element for performing any of the above methods .
  • a program is provided that, when executed by a processor, is used to perform any of the above methods.
  • a program product such as a computer readable storage medium, can also be provided, including the program.
  • the embodiment of the present application provides a method and a device for reporting a power headroom, and considers the impact of the introduction of multi-time-frequency resource configuration on the PH, thereby more accurately calculating and reporting the PH, which is beneficial to improving scheduling decisions on the network side and improving communication performance.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a multi-beam transmission scenario according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of another multi-beam transmission scenario according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a method for reporting a PH according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another method for reporting a PH according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of another method for reporting a PH according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another method for reporting a PH according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of still another method for reporting a PH according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of an apparatus according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another apparatus according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a RAN node according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a terminal according to an embodiment of the present application.
  • the terminal also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • Devices for example, handheld devices with wireless connectivity, in-vehicle devices, and the like.
  • terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality.
  • MIDs mobile internet devices
  • VR virtual reality
  • augmented reality, AR augmented reality, AR
  • wireless terminals in industrial control wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and the like.
  • a radio access network is a part of a network that connects a terminal to a wireless network.
  • a RAN node (or device) is a node (or device) in a radio access network, which may also be referred to as a base station.
  • RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), and Node B (Node).
  • TRP transmission reception point
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • B, NB base station controller
  • BTS base transceiver station
  • home base station for example, home evolved NodeB, or home Node B, HNB
  • BBU baseband unit
  • Wifi access point AP
  • the RAN may include a centralized unit (CU) node and a distributed unit (DU) node.
  • CU centralized unit
  • DU distributed unit
  • This structure separates the protocol layer of the eNB in the long term evolution (LTE) system, and the functions of some protocol layers are centrally controlled in the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU by the CU. Centrally control the DU.
  • LTE long term evolution
  • Multiple means two or more, and other quantifiers are similar. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • terminal 120 accesses a wireless network through RAN node 110 to acquire services of an external network (e.g., the Internet) through a wireless network, or to communicate with other terminals through a wireless network.
  • the radio resources communicated between the terminal 120 and the RAN node 110 are allocated by the RAN node 110.
  • the RAN node 110 may allocate excessive transmission bandwidth to the terminal, so that the signal to interference ratio (signal to interference) The plus noise ratio (SINR) is low. Therefore, the terminal 120 provides the PH information to the RAN node 110 so that the RAN node adjusts the transmission bandwidth allocated to the terminal with the PH as a reference.
  • SINR signal to interference ratio
  • the transmit power may also be referred to as transmit power.
  • the PH can reflect how much of the transmit power the terminal can use in addition to the required transmit power.
  • the terminal reports the PH to the RAN node, and the RAN node can use the PH as a reference for allocating resources to the terminal.
  • the PH reported by the terminal can be referred to as a power headroom report (PHR).
  • PHR power headroom report
  • the PH value in the PHR can be positive, negative or zero.
  • the PH value When the PH value is negative, it indicates that the required transmit power has exceeded the maximum transmit power allowed by the terminal, and the RAN node can reduce the bandwidth resource allocated to the terminal, thereby improving the signal quality of the signal transmitted by the terminal uplink to the RAN node;
  • the PH value When the PH value is positive, it indicates that the maximum transmit power allowed by the terminal can bear the power required for the current information transmission, and the RAN node can allocate more bandwidth resources to the terminal to improve resource utilization.
  • the PH is valid for the subframe i of the serving cell c, that is, the value of the PH is calculated based on the subframe i of the serving cell c, reflecting the maximum transmit power allowed by the terminal on the subframe i of the serving cell c and the required transmit power. The difference.
  • the maximum transmission power allowed by the terminal is simply referred to as the maximum transmission power.
  • PH usually has three types of calculations, which are described below:
  • the first type (or Type 1): the required transmit power is the transmit power required to transmit the physical uplink shared channel (PUSCH), that is, the maximum transmit power allowed by the terminal and the transmit power required to transmit the PUSCH. The difference between.
  • PUSCH physical uplink shared channel
  • the PH can be calculated by the following formula 1:
  • PH type1,c (i) P CMAX,c (i)- ⁇ 10log 10 (M PUSCH,c (i))+P O_PUSCH,c (j)+ ⁇ c (j) ⁇ PL c + ⁇ TF,c (i)+f c (i) ⁇ (1)
  • PH type1,c (i) represents the PH calculated by the serving cell c on the subframe i under the first type.
  • P CMAX,c (i) represents the maximum transmit power (also known as the maximum transmit power, similar below).
  • M PUSCH,c (i) represents the transmission bandwidth of the PUSCH, which is expressed in terms of the number of resource blocks (RBs), that is, in units of RBs.
  • P O_PUSCH,c (j) denotes the nominal (or reference) power of the PUSCH (which may also be referred to as a power density reference value), including the cell nominal power of the PUSCH (P O_NOMINAL_PUSCH, c (j)) and the terminal specific label of the PUSCH
  • ⁇ c (j) represents a path loss adjustment factor (or compensation factor).
  • PL c represents the path loss.
  • ⁇ TF,c (i) denotes a power offset value related to the modulation coding mode or the content of the signal, which embodies the influence of the modulation coding mode or the content of the signal on the power, and the content of the signal refers to the control transmitted in the PUSCH.
  • Information such as when a channel quality indicator (CQI) is transmitted in the PUSCH, the RAN node would like to have better received power, and correspondingly send PUSCH with greater power, this "larger" offset
  • CQI channel quality indicator
  • f c (i) represents the power adjustment value formed by the closed loop power control of the terminal.
  • the meaning of c and i in each parameter in the above formula means that the parameter is a parameter to the serving cell c, subframe i.
  • the PH can be calculated by the following formula (2):
  • the terminal does not transmit the PUSCH in the subframe i to the serving cell c, or when the uplink transmission terminal is configured with an authorized-assisted access (LAA) secondary cell (LAA SCell) and the terminal is on the serving cell c Received downlink control information (DCI) (DCI Format 0A/0B/4A/4B) in the format 0A/0B/4A/4B, when the cell "PUSCH trigger A" in the DCI is set to 1 If the terminal reports the PH in the PUSCH transmission corresponding to the DCI in the serving cell c, the PH can be calculated by using the following formula (3):
  • T C the maximum transmit power
  • MPR the maximum power reduction
  • P-MPR the maximum additional power reduction
  • T C and P-MPR affect the value related to the maximum uplink performance of the selected uplink transmission path, for example, when it is affected, the value is 1.5 dB, and when it does not affect, the value is 0 dB.
  • T C and P-MPR affect the value related to the maximum uplink performance of the selected uplink transmission path, for example, when it is affected, the value is 1.5 dB, and when it does not affect, the value is 0 dB.
  • the second type (or Type 2):
  • the required transmit power is the transmit power required to transmit the PUSCH and the PUCCH, that is, the difference between the maximum transmit power allowed by the terminal and the transmit power required to simultaneously transmit the PUCCH and PUSCH.
  • the PH can be calculated by the following formula (4):
  • P 0_PUCCH represents the nominal (or reference) power to the PUCCH (which may also be referred to as the power density reference value), including the cell nominal power (P O_NOMINAL_PUCCH ) for the PUCCH and the terminal-specific nominal power ( P O_UE_PUCCH ) for the PUCCH.
  • h(n CQI , n HARQ , n SR ) represents the power offset associated with the PUCCH format, which embodies the influence of the content of the signaling transmitted in the PUCCH on the power, h(n CQI , n HARQ , n SR ) and The CQI transmitted in the PUCCH, the hybrid automatic repeat request (HARQ) feedback information (for example, ACK/NACK), the number of bits of the scheduling request (SR), and the like.
  • HARQ hybrid automatic repeat request
  • ⁇ F_PUCCH (F) denotes a power offset related to the PUCCH format
  • the parameter is provided by a higher layer
  • the value of the parameter represents a power offset of the PUCCH format F relative to the PUCCH format 1a, where the format F may be the format 1, 1b, 2, 2a, 2b, 3, 4, 5 or 1b with channel selection.
  • ⁇ TxD (F′) represents the power offset associated with the PUCCH format F′ when the terminal transmits the PUCCH by using the transmit diversity technique.
  • the value of the parameter is provided by the upper layer, otherwise The value of this parameter is 0, where the format F' can be format 1, 1a/1b, 1b with channel selection, 2/2a/2b or 3.
  • g(i) represents the power adjustment value (or compensation value) formed by the closed loop power control of the terminal.
  • the PH can be calculated by the following formula (5):
  • the PH can be calculated by the following formula (6):
  • the PH can be calculated by the following formula (7):
  • the terminal Before detecting the PDCCH (or the enhanced physical downlink control channel EPDCCH) and generating the PH, the terminal cannot determine whether there is a PUCCH transmission corresponding to the physical downlink shared channel (PDSCH) transmission in the subframe i for the primary cell.
  • the PH can be calculated by the following formula (8). The following conditions are met: the PUCCH format 1b with channel selection and the simultaneous PUCCH-PUSCH are configured for the terminal (that is, the configuration field simultaneousPUCCH-PUSCH) The terminal is allowed to simultaneously transmit PUCCH and PUSCH), or, for a terminal configured with PUCCH format 3 and configured with simultaneous PUCCH-PUSCH, PUCCH format 1b with channel selection is used for HARQ information feedback.
  • the third type (or Type 3): the required transmit power is the transmit power required to transmit a sounding reference signal (SRS), ie, between the maximum transmit power allowed by the computing terminal and the transmit power required to transmit the SRS. Poor.
  • SRS sounding reference signal
  • the PH may be calculated by the following formula (9), if the terminal For the serving cell c, the SRS is not transmitted in the subframe i, and the PH can be calculated by the following formula (10):
  • PH type 3,c (i) represents the PH calculated on the subframe i for the serving cell c under the third type.
  • M SRS,c represents the transmission bandwidth of the SRS, which is expressed in the number of RBs, that is, in units of RBs.
  • ⁇ SRS,c represents the path loss adjustment factor (or compensation factor) of the SRS.
  • PL c represents the path loss.
  • f SRS,c (i) represents the power adjustment value of the SRS formed by the closed-loop power control of the terminal, that is, the closed-loop power adjustment value of the SRS.
  • the meaning of c and i in each parameter in the above formula means that the parameter is a parameter to the serving cell c, subframe i.
  • a terminal can communicate with a RAN node through multiple beams, hereinafter referred to as a multi-beam transmission technique.
  • the RAN node may configure a plurality of time-frequency resource configurations for the terminal, where the time-frequency resource configuration includes one or all of the following configurations: a frequency domain length of a resource element (RE), that is, a sub-carrier spacing; The length of the domain, that is, the length of time of orthogonal frequency division multiplexing (OFDM) symbols; the number of time resource units in the scheduling time unit; the cyclic prefix (CP) type of the OFDM symbol.
  • the subcarrier spacing may be 15 kHz, 30 kHz, or 60 kHz, and the like.
  • the length of time of an OFDM symbol is inversely proportional to the subcarrier spacing, so the length of time of a plurality of OFDM symbols can be configured.
  • the scheduling time unit is a unit or granularity of scheduling resources in the time domain.
  • the scheduling time unit is called a transmission time interval (TTI) in the LTE system, and the time resource unit is a resource unit in the time domain.
  • TTI transmission time interval
  • the number of time resource units in the scheduling time unit refers to the number of time resource units scheduled in the time domain.
  • the scheduling time unit is one subframe
  • the number of time resource units in the scheduling time unit may be The number of OFDM symbols scheduled once in the subframe.
  • the CP type may include a regular CP or an extended CP or the like.
  • the multiple time-frequency resource configuration techniques can be referred to as Numerology technology.
  • the terminal supports a waveform technique in the uplink transmission, that is, single carrier-orthogonal frequency division multiplexing (SC-OFDM) technology, along with the technology.
  • SC-OFDM single carrier-orthogonal frequency division multiplexing
  • the terminal can also support Cyclic prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) technology in uplink transmission, for example, based on Discrete Fourier Transform (DFT) extension.
  • DFT Discrete Fourier Transform
  • the terminal adopts multi-beam transmission technology, or uses multiple time-frequency resource configurations, or supports more than one waveform technology in uplink transmission
  • the existing PH reporting is only for a single beam, a single time-frequency resource configuration or a single waveform.
  • the technically reported PHR cannot accurately reflect the terminal PH.
  • the following embodiments provide a PH reporting method and apparatus, and consider multi-beam transmission, multi-time-frequency resource configuration, or introduction of multiple uplink waveform technologies.
  • the influence of the margin, and thus the more accurate calculation and reporting of the power headroom, is beneficial to improve the scheduling decision on the network side and improve the communication performance.
  • a terminal can communicate with multiple RAN nodes through multiple beams on one carrier.
  • the terminal can communicate with different RAN nodes through different beams; the terminal can also communicate with one RAN node through multiple beams on one carrier, that is, the terminal can communicate with the same RAN node through different beams.
  • FIG. 2 is a schematic diagram of a multi-beam transmission scenario according to an embodiment of the present disclosure.
  • a terminal communicates with different RAN nodes through different beams.
  • FIG. 3 is a schematic diagram of another multi-beam transmission scenario according to an embodiment of the present disclosure.
  • a terminal communicates with a same RAN node through different beams.
  • the terminal is described as an example in which the terminal communicates with the RAN node through two beams, but is not intended to limit the present application.
  • the terminal can also use both communication methods at the same time.
  • terminal 210 communicates with RAN node 220 and RAN node 230 on a carrier (or serving cell) via different beams, respectively.
  • terminal 310 communicates with RAN node 320 on a carrier over different beams.
  • a beam can be understood as a spatial resource, and transmission over multiple beams can improve resource utilization.
  • transmission on multiple beams can reduce the impact of signal blockage; for example, when transmission on one beam is blocked by obstacles such as cars and people, the other beam can Communication is maintained so that current communications are not interrupted, thus reducing the effects of signal blocking.
  • the beam is represented by an arrow in the figure, which can be understood as a distribution of signal strength.
  • a transmit beam can be understood as a signal intensity distribution formed in a spatial direction after a signal is transmitted through an antenna
  • a receive beam can be understood as a signal intensity distribution in a spatial direction of a wireless signal received from an antenna.
  • the transmit beam and the receive beam may be the same or different.
  • the antenna When the signal is transmitted or received, the antenna is processed by weighting or the like, so that the energy of the signal is concentrated in a specific spatial direction, and the aggregation of the signal energy in the direction can be understood as a beam.
  • the beam resource has spatial directivity, and the signal is pre-coded to make the signal intensity concentrated in a specific spatial direction, and the signal is received in the spatial direction, which has better receiving power, and the characteristic can be called spatial directivity (or Energy transfer directivity).
  • the terminal can use different antenna ports to form different beams. For example, in the scenarios of FIG. 2 and FIG. 3, the terminal can form one beam direction through the antenna ports PortD0 to D3, and form another beam direction through the antenna ports PortD4 to D7.
  • the terminal reports the PH the multi-beam is not considered, and only the PH of the single beam is calculated and reported, so that the basis for the RAN node to allocate resources to the terminal is not accurate enough, which affects the communication performance.
  • the beam condition of the terminal in the subframe of the serving cell is taken into account in the reporting of the PH, so that the reported PH more accurately reflects the power situation of using multiple beam transmissions, which is beneficial to the RAN node.
  • Scheduling decisions When the terminal uses multiple beams to transmit at the same time, the terminal can calculate the PH for each beam, and report the multiple PH information to the RAN node when the trigger condition is met.
  • the PH at this time is for a single beam, which can be called Beam-specific PH, which calculates or reports the PH separately for each beam.
  • the terminal may calculate the PH by combining multiple beams, and when the trigger condition is met, the terminal reports a PH information, which may be referred to as a combined PH (joint PH), which is a beam considering multiple beams. Calculated under the beam-specific parameter.
  • the beam-specific parameters are also called beam-level power control parameters.
  • the so-called beam-level power control parameters are independent parameters of the pointer to the beam (or beam group).
  • the terminal has uplink beams B1-Bn, and parameters P1-Pn exist independently for each beam, that is, parameter P1 is for beam B1, parameter P2 is for beam B2, and so on, and parameter Pn is for beam Bn. of.
  • the terminal has beams B1-Bn, which are divided into beam groups G1-Gm, and parameters P1-Pm exist independently for each beam group, wherein the parameter P1 is for the beam group G1, and the beam in the beam group G1 Both are applicable; the parameter P2 is for the beam group G2, which is applicable to the beams in the beam group G2; and so on, the parameter Pm is used for the beam group Gm, which is applicable to the beam in the beam group Gm, wherein , m and n are both positive integers.
  • the power control parameters that may be affected include:
  • Path loss PL c path loss adjustment factor ⁇ :
  • the propagation paths experienced by multiple beams may be different, so their path loss may be different.
  • the beamforming weights of different beams are different, their beamforming gains are also different, and at high frequencies, path loss may be affected. Differently, if the same transmit power is used, the beam with a high beamforming gain will have a higher received power, so the path loss is smaller.
  • Nominal (or reference) power P 0 (or P O ):
  • the RAN node can configure different P 0 for different beams; the terminal calculates the path loss of the reference beam without distinguishing the path loss of different beams. In this case, P 0 can be different, but the path loss is the same.
  • the terminal communicates with multiple RAN nodes through multiple beams, different RAN nodes may have different expectations for received power due to different interference levels in different cells, so the terminal may be configured based on beams (or beam groups). ) P 0 .
  • the data format transmitted to different cells may be different, such as modulation coding scheme used for two cells (modulation) Different from the coding scheme (MCS), different ⁇ TF,c (i) values may be configured at this time.
  • the corresponding transmission bandwidth M SRS,c can be SRS.
  • M c (i) it is collectively referred to as a transmission bandwidth M c (i), that is, M c (i) may include M PUSCH, c (i) or M SRS,c .
  • the beam level power control parameter can include, for example, one or more of the following parameters: nominal (or reference) power P 0 (or P O ), path loss adjustment factor ⁇ , path loss PL c , power offset value ⁇ TF,c (i), power adjustment value f c (i), transmission bandwidth M c (i).
  • P 0 corresponds to P O_PUSCH, c (j), P 0_PUCCH , and P O_SRS in the above formulas
  • c (m) respectively correspond to ⁇ c (j) in the above formula in different scenarios.
  • ⁇ SRS,c the transmission bandwidth M c (i) respectively corresponds to M PUSCH,c (i) or M SRS,c in the above formula in different scenarios.
  • the information of the PH reported by the terminal may be the calculated PH itself, or may be indication information indicating the PH, such as an index or an offset value.
  • the information of the PH reported by the terminal is hereinafter referred to as PHR.
  • FIG. 4 is a schematic diagram of a PH reporting method according to an embodiment of the present application.
  • the method is performed by the terminal, and the terminal transmits on K subframes (or beam groups) on subframe i of the serving cell c, where K is a positive integer greater than or equal to two.
  • the method includes the following steps:
  • the terminal calculates the PH on the subframe of the serving cell, where the terminal may calculate a PH value according to the beam level power control parameters of the K beams (or beam groups); or, the terminal may separately target the K1 beams (or Beam group) calculates PH to obtain K1 PH values, where K1 is less than or equal to K, that is, the terminal can calculate the PH value of all or part of the beam (or beam group).
  • the terminal reports the PHR.
  • the PHR includes information on the PH value calculated from the beam level power control parameters of the K beams (or beam groups) above.
  • the PHR includes information of K1 PH values calculated above.
  • the PHR includes information on the average of the K1 PH values.
  • the PHR includes information of a reference PH value and a value of an offset value, wherein the reference PH value is a PH value of K1 PH values, and the offset value is relative to other PH values of the K1 PH values.
  • the offset value of the reference PH value has K1-1 offset values at this time; or the reference PH value is the reference PH value, and the offset value is the offset value of the K1 PH values relative to the reference PH value.
  • the information of the PH value may be the PH value itself, or may be information indicating the PH value, such as an index.
  • the information of the offset value is similar, and may be the offset value itself or information indicating the offset value, such as an index.
  • the terminal calculates the PH value for all the beams, and reports the calculated PH value information or the information of the average value of all PH values.
  • the average value herein may be a dB average or a linear average, which will be described in detail in the following examples.
  • the K1 beams may be specified by the RAN node; or may be information of a predetermined maximum K1 PH value, or a minimum K1 PH value information, or a maximum K1/2 PH value. The information and the minimum K1/2 PH value information will be described in detail in the following examples.
  • the terminal calculates the PH according to the beam-level power control parameters of the K beams (or beam groups), and the case of obtaining a PH value may be applied to the case of sharing power between antenna ports (or antenna port groups) forming multiple beams, such as an antenna. Maximum transmit power sharing between ports (or antenna port groups).
  • the case where the terminal calculates a plurality of PH values may be applied to the case where the power is not shared between the antenna ports (or the antenna port groups), and may also be applied to the case where the power is shared between the antenna ports (or the antenna port groups).
  • the terminal calculates the PH based on the beam-level power control parameters of the K beams (or beam groups) to obtain a PH value.
  • the beam level power control parameters may, for example, include one or more of the following parameters: nominal (or reference) power P 0 (or P O ), path loss adjustment factor ⁇ , path loss PL c , power offset value ⁇ TF, c (i), power adjustment value f c (i).
  • the terminal can calculate the PH value using only one or a part of the parameters.
  • the first case for the case where the terminal calculates the PH value using only one beam-level power control parameter, the average value of the parameters of the plurality of beams, for example, a decibel (dB) average value or a linear average value is used to calculate the PH.
  • the parameter is described by taking the nominal power P 0 (or P O ) as an example, and other parameters are similar.
  • the nominal power P 0 (P or O) PH used in calculating the average of a plurality of nominal power P 0 of the beam (P or O), e.g., decibels (dB) average or a linear average.
  • the dB average can be written as The linear average can be written as Alternatively, the influence of the number of antenna ports can be ignored to reduce the computational complexity.
  • the dB average can be written as The linear average can be written as Where N is the number of uplink antenna ports of the terminal, that is, there are N antenna ports in the terminal uplink; k represents any beam (or beam group); N k represents the number of antenna ports forming a beam (or beam group) k, and K represents a beam The number of (or beam groups).
  • a beam group refers to a beam that is configured with the same beam-specific parameters or a beam that is configured with the same power control parameters.
  • the above average value may also be replaced by a sum, which may be the sum of the dB values or the sum of the linear values, at this time P O_PUSCH,c (j )as follows:
  • P 0_PUCCH and P O_SRS,c (m) are similar to that of P O_PUSCH,c (j), and the PH is calculated after being calculated into the corresponding formula, and will not be described here.
  • the manner in which the PH is calculated using any of the other beam level power control parameters is similar to the manner in which the PH is calculated using the nominal power P 0 (or P O ) above.
  • the other beam level power control parameters are, for example, a path loss adjustment factor ⁇ , a path loss PL c , a power offset value ⁇ TF, c (i), and a power adjustment value f c (i).
  • PL c as an example, first calculate the dB average or linear average of the path loss PL c of multiple beams, and then substitute the dB average or linear average into the formula for calculating the PH corresponding to the scene according to the scene.
  • the formula for calculating the dB mean or linear mean of the path loss PL c is similar to the formula for calculating the dB mean or linear mean of the nominal power P 0 (or P O ), except that P 0 (or P O ) Replace with PL c as follows:
  • the above average value may also be replaced by a sum, which may be the sum of the dB values or the sum of the linear values, where PL c is as follows:
  • the second case for the case where the terminal calculates the PH value by using multiple beam-level power control parameters, the terminal can calculate the PH in a manner similar to the above-mentioned first case. That is, the average value of each parameter is calculated separately, and then the average value of these parameters is used to calculate the PH.
  • the nominal power P 0 (or P O ) dB average or linear average of the multiple beams, and the dB average or linear average of the path losses PL c of the multiple beams are calculated. Then, according to the scene, it is brought into one of the above formulas (1) to (8). Wherein the nominal power P 0 (or P O ) dB average or linear average, and the dB average or linear average of the path loss PL c of the plurality of beams are calculated in the same manner as in the first case above, I will not repeat them here.
  • the average value is separately calculated for each beam level power control parameter, and then calculated according to the scene into the corresponding formula.
  • the combined average of the specific parameters of these beams is calculated, and the PH is calculated together with other parameters. At this time, the formula form is changed.
  • beam-level power control includes nominal power P 0 (or P O ) and path loss PL c , although the path loss adjustment factor ⁇ may be set as a beam-level power control parameter or may not be set as a beam-level power control parameter. , but since it is a coefficient of PL c , it can be included in the separately calculated part.
  • the average value at this time also includes the dB average and the linear average. Taking the scene of the above formula (1) as an example, the formula for calculating PH at this time is as follows (11) or (12):
  • the power portion of these beam-specific parameters (which may be referred to as the beam-level power portion) is calculated, the calculated beam-level power portions are summed, and others
  • the parameters calculate the PH together.
  • the formula for calculating PH at this time is as follows (15) or (16):
  • the power estimation value ie, the required transmission power
  • the average value of the power power estimation values is calculated, where the average value includes a dB average value or a linear average value.
  • the form of the formula has changed. Taking the scene of the above formula (1) as an example, the formula for calculating PH at this time is as follows (17) or (18):
  • the PH can be calculated using one of the equations (17) to (20). That is to say, the power estimation value corresponding to each beam is calculated, and the average value of the power power estimation values is calculated, and the method of calculating the PH using the average value can be applied to the above first case.
  • the number of beam-level power control parameters used in calculating the power estimation value of each beam is not limited, and may be one or more, that is, part or all of the above possible beam-level power control parameters, and some of them. Including one case.
  • the calculation formula of the PH is as follows (21) or (22):
  • the PH can be calculated using the formula (21) or (22) regardless of whether the terminal uses all of the above possible beam-level power control parameters (including one) or all of them to calculate the PH. That is to say, the power estimation value corresponding to each beam is calculated, and the sum of these power power estimation values is calculated, and the method of calculating the PH by using the sum can be applied to the above first case.
  • the number of beam-level power control parameters used in calculating the power estimation value of each beam is not limited, and may be one or more, that is, part or all of the above possible beam-level power control parameters, and some of them. Including one case.
  • the terminal calculates the PH for the K1 beams (or the beam group), obtains the K1 PH values, and reports the information of the K1 PH values or the average of the K1 PH values is described.
  • the average value here can be either a dB average or a linear average.
  • the case where the information of the K1 PH value is reported may be replaced by the information of the reference PH value and the information of the offset value.
  • the terminal calculates the corresponding PH value for each of the K beams (or beam groups) according to one of the above formulas (1) to (10), which is recorded as PH 1 to PH K , and the terminal reports the PH 1 ⁇ PH K information. That is, for the beam (or beam group) used for the current transmission, all the PH values are reported. In addition, the terminal may also report only a PH value, which is an average of K PH values, which may be a dB average or a linear average.
  • the second case the terminal reports the information of the K1 PH values indicated by the RAN node.
  • the K1 beams corresponding to the K1 PH values may be configured by the RAN node to the terminal, for example, the RAN node is configured to the terminal by using high layer information or physical layer signaling, and the high layer signaling or physical layer signaling includes indication information for indicating the K1. Beams.
  • the indication information is, for example, a beam number, a channel state information-reference signal (CSI-RS) resource number, a sounding reference signal (SRS) resource number, an SRS antenna port number, and the like.
  • the K1 beams can be predefined, such as beams 1-4.
  • K1 PH values may be PH values satisfying a preset rule, such as information of the maximum K1 PH values, or information of the smallest K1 PH values, or information of the largest K1/2 PH values and the smallest K1/2 PH information.
  • the terminal calculates corresponding PH values for K beams (or beam groups) according to one of the above formulas (1) to (10) according to the scene, and records them as PH 1 to PH K . Then, the terminal may report the information of the K1 PH value according to the indication of the RAN node, or report the information of the PH value on the preset K1 beams, or report the information of the K1 PH values that satisfy the preset rule.
  • the terminal may also select the PH value to be reported and notify the RAN node of the beam corresponding to the PH value reported by the RAN node.
  • the terminal may also report only a PH value, which is an average of K1 PH values, which may be a dB average or a linear average.
  • the third case the terminal calculates the corresponding PH value for each of the K beams (or beam groups) according to one of the above formulas (1) to (10) according to the scene, and records it as PH 1 to PH K , and the terminal reports one of the PHs.
  • the reported content is: PH 1 , PH 2 -PH 1 ,..., PH K -PH 1 .
  • the method of reporting the offset value may also be adopted. That is, a PH value is reported as a reference PH value, and an offset value of other PH values relative to the reference PH value is reported.
  • the reference PH value may not be the value of the K1 PH values, and may be a set value or a PH value of N PH values in addition to the K1 PH values. At this time, the reference PH value is referred to as a reference PH value.
  • the terminal uses one beam transmission in the subframe of the serving cell, the PH value is calculated by using the prior art, and the information of the PH value is reported. After that, the terminal may report the K1 PH value information under the instruction of the RAN node or the user's own selection, and the reporting manner is the same as the above embodiment, and details are not described herein again.
  • the terminal can support the existence of multiple time-frequency resource configurations. Based on this, in an embodiment of the present application, the time-frequency resource configuration of the terminal in the subframe i of the serving cell is considered to be in the reporting of the PH, so that the reported PH more accurately reflects the configuration of multiple time-frequency resources.
  • the power situation is beneficial to the scheduling decision of the RAN node.
  • the terminal When the terminal supports multiple time-frequency resource configurations, different values or configurations of the same parameter may exist in the parameters used in calculating the PH value for different time-frequency resource configurations.
  • the nominal power P 0 (or P O ), different time-frequency resource configurations (eg, sub-carrier spacing) under different transmission conditions, the error rate that can be achieved is different, therefore, the RAN node pairs different time-frequency
  • the expected received power of the resource configuration may be different, and different nominal powers P 0 may be configured for the terminal for different time-frequency resource configurations.
  • the PUSCH transmission bandwidth M PUSCH,c (i) different time-frequency resource configurations can be frequency-division multiplexed in the same subframe of the serving cell, occupying different bandwidths respectively, and the scenario can be applied to multiple services.
  • the RAN node will be able to allocate bandwidth for multiple time-frequency resource configurations.
  • the same frequency domain resource is allocated, since the size of the frequency domain unit configured by different time-frequency resources (for example, the size of the sub-carrier spacing) is different, the same frequency domain resource is not The actual bandwidth occupied in the frequency domain under the same-frequency resource configuration is different.
  • the transmission bandwidths M PUSCH,c (i) of the PUSCH may be different under different time-frequency resource configurations.
  • the transmission bandwidth M SRS,c of the SRS is similar.
  • these parameters are referred to as time-frequency resource configuration level power control parameters, or Numerology power control parameters, or time-frequency resource configuration specific parameters, or Numerology specific parameters.
  • the real-time resource configuration level power control parameters include one or all of the following parameters: nominal power P 0 (or P O ), and transmission bandwidth M c (i).
  • the first case when the terminal supports multiple time-frequency resource configurations, and the current time-frequency resource configuration is used for transmission, the terminal may calculate the PH value and report the calculated PH value by using the current parameter of the time-frequency resource configuration.
  • Information can be.
  • the reference time-frequency resource configuration may be configured, and the power control parameters affected by the time-frequency resource configuration are converted according to the currently used time-frequency resource configuration and the reference time-frequency resource configuration, and the PH value is calculated by using the converted power control parameter. And report the PH value information.
  • the power control parameters are M PUSCH,c (i), and the time-frequency resources are configured as sub-carrier spacing as an example.
  • the formula for calculating the pH value is as shown in the following formula (23):
  • the SubSacing current and the SubSacing reference are the current subcarrier spacing and the reference subcarrier spacing, respectively.
  • the reference subcarrier spacing may be any one of the terminal supported subcarrier spacings, for example 15 KHz.
  • FIG. 5 is a schematic diagram of another PH reporting method provided by an embodiment of the present application.
  • the method is supported by the terminal, and the terminal supports multiple time-frequency resource configurations, and the terminal transmits the time-frequency resource configuration on the subframe i of the serving cell c.
  • the time-frequency resource configuration is called the current time-frequency resource configuration, as shown in the figure.
  • the method includes the following steps:
  • S510 The terminal converts the power control parameter according to the current time-frequency resource configuration and the reference time-frequency resource configuration.
  • S520 The terminal calculates the PH according to the converted power control parameter to obtain a PH value
  • the power control parameter is, for example, the transmission bandwidth M PUSCH,c (i) of the PUSCH .
  • the transmission bandwidth M SRS,c of the SRS is similar.
  • the second case when the terminal supports multiple time-frequency resource configurations, and currently uses more than one time-frequency resource configuration for transmission, a PH reporting scheme similar to that in the above multi-beam transmission scenario may be adopted.
  • the difference is that, unlike the averaging scheme, the powers of different time-frequency resource configurations here are additive, not averaging.
  • the power control parameter is described by taking the nominal power P 0 (or P O ) as an example, and other parameters are similar.
  • Resource allocation nominal power P 0 (or P O) and used in calculating various PH nominal power P 0 (or P O) is the frequency when the terminal used, e.g., linear or values, and the dB value And, where the sum of the dB values is The sum of the linear values is Then, the sum of the sum or the linear value of the dB value is substituted as P O_PUSCH,c (j) into one of the above formulas (1) to (8) according to the scene to calculate the PH.
  • c (j) is changed in the formula, and other parameters may be consistent with the prior art, and will not be described herein.
  • the terminal can calculate the PH in a manner similar to the above when only one power control parameter is affected by the time-frequency resource configuration. That is, the sum of the sum of the dB values of the respective parameters or the linear values is calculated separately, and then the sum of the dB values of the parameters or the sum of the linear values is used to calculate the PH.
  • the sum is calculated separately for each power control parameter, and then calculated according to the scene into the corresponding formula.
  • the sum of these parameters is comprehensively calculated, and the sum is called the sum of the power components of the time-frequency resource configuration level, and the sum of the power components of the time-frequency resource configuration level is calculated together with other parameters, and at this time, the formula The form has changed.
  • nu represents the number of time-frequency resource configurations, which is the number of time-frequency resource configurations currently used by the terminal.
  • the power estimation value ie, the required transmission power
  • the sum of the power power estimation values may be calculated, where the sum includes a sum or a linear value of the dB value.
  • the form of the formula has changed. Taking the scene of the above formula (1) as an example, the formula for calculating PH at this time is as follows (26) or (27):
  • the PH can be calculated by the formula (26) or (27) regardless of whether the terminal uses all of the above possible time-frequency resource configuration level power control parameters (including one) or all to calculate the PH.
  • the number of time-frequency resource configuration-level power control parameters used in calculating the power estimation value of each time-frequency resource configuration is not limited, and may be one or more, that is, the above-mentioned possible time-frequency resource configuration-level power control Some or all of the parameters, some of which include one.
  • the terminal may calculate the PH for the multiple time-frequency resource configurations, obtain multiple PH values, and report the information of the multiple PH values.
  • the terminal when the terminal currently uses the nu-type time-frequency resource configuration for transmission, the terminal can calculate the PH according to the CU-type time-frequency resource configuration, and obtain nu PH values, which are recorded as PH 1 to PH nu , and the terminal reports the Information from PH 1 to PH nu .
  • the terminal may also use one of the PH values as a reference value to report an offset value (or a difference value) of other PH values with respect to the reference value.
  • the terminal may also be reported for the RAN node to make a decision.
  • the information of the PHs for which the time-frequency resource configuration is reported may be predetermined, for example, the information of the PHs whose subcarrier spacing is 15k, 30k, 60k is reported by default.
  • the RAN node may indicate that the RAN node sends the indication signaling to the terminal, where the indication signaling is used to indicate the time-frequency resource configuration of the information that the terminal reports the PH.
  • the terminal receives the indication signaling, and reports information indicating the PH of the time-frequency resource configuration indicated by the signaling.
  • the terminal may select a time-frequency resource configuration for reporting the information of the PH.
  • FIG. 6 is a schematic diagram of a PH reporting method according to an embodiment of the present application.
  • the method is performed by the terminal, and the terminal adopts nu time-frequency resource configuration, where nu is a positive integer greater than or equal to 2.
  • the method includes the following steps:
  • the terminal calculates the PH on the subframe of the serving cell, where the terminal may calculate a PH value according to the time-frequency resource configuration level power control parameter configured by the nu time-frequency resources, or the terminal may separately target the nu1 time-frequency.
  • the resource configuration calculates PH, and obtains nu1 PH values, where nu1 is less than or equal to nu, that is, the terminal can calculate the PH value of all or part of the time-frequency resource configuration.
  • the terminal reports the PHR.
  • the PHR includes the information of the PH value calculated according to the time-frequency resource configuration level power control parameter configured by the nu time-frequency resources.
  • the PHR includes the information of the nu1 PH values calculated above.
  • the PHR includes information of a reference PH value and a value of an offset value, wherein the reference PH value is a PH value of nu1 PH values, and the offset value is nu1 PH values other PH values are relative
  • the offset value of the reference PH value has nu1-1 offset values at this time; or the reference PH value is the reference PH value, and the offset value is an offset value of nu1 PH values relative to the reference PH value.
  • the terminal calculates the PH value for all time-frequency resource configurations and reports the calculated PH value.
  • the nu1 time-frequency resource configuration may be specified by the RAN node; or may be predetermined.
  • the terminal uplink supports more than one waveform technology, for example, when supporting SC-OFDM technology and DFT-S-OFDM technology.
  • the terminal does not use two waveform technologies for transmission at the same time. Therefore, when calculating the PH corresponding to each waveform technology, the existing formula can be used for calculation without adjusting the formula.
  • different values or configurations of the same parameter may exist in the parameters used in calculating the PH value, such as the maximum transmit power P CMAX,c (i) or Since the peak-to-average power ratio (PAPR) of the two waveforms is different, different power backoffs may be used in different waveforms, resulting in different maximum transmit powers configured by the terminal.
  • the terminal selects the parameter corresponding to the waveform technology to calculate the PH value and reports the calculated PH value information according to the waveform technology used by the terminal to transmit on the subframe of the serving cell.
  • the terminal may calculate the PH values of the two waveforms according to the parameter configuration of the two waveforms, and in addition to reporting the PH information of the current waveform in the reporting process, the terminal may also report the other waveform.
  • Whether the terminal reports the PH of another waveform may be determined by: first, default or setting the terminal to report the PH information of the two waveforms; second, the RAN node instructing the terminal to report the PH of the other waveform.
  • Information For example, the RAN node sends the indication signaling to the terminal, where the indication signaling is used to indicate that the terminal reports the PH of another waveform. After receiving the indication signaling, the terminal reports the PH information of another waveform according to the indication of the RAN node. Or the indication signaling is used to indicate whether the terminal reports the PH information of the two waveforms.
  • the terminal instructs the terminal to report the PH information of the two waveforms the terminal reports the information of the PH of the other waveform according to the indication of the RAN node.
  • the terminal can report the PH information of the two waveforms at the same time, or report the PH information of the current waveform, and then report the PH information of the other waveform.
  • the manner in which the terminal reports the information of the PH of another waveform and the information of the PH of the current waveform includes the following:
  • the embodiment of the present application provides a PH reporting method for a terminal, where the terminal supports the first waveform and the second waveform. Please refer to FIG. 7, the method includes the following steps:
  • S710 The terminal reports information about the PH value of the current first waveform to the RAN node.
  • S720 The terminal reports the information of the PH of the second waveform to the RAN node, where the information of the PH of the second waveform includes the information of the PH value of the second waveform, or includes the PH value of the second waveform relative to the PH value of the first waveform.
  • the offset value, or the maximum transmit power of the second waveform is the information of the PH of the second waveform.
  • the RAN node After receiving the information of the PH value of the first waveform, the RAN node determines the PH value of the first waveform to perform a scheduling decision, that is, determines whether to adjust the bandwidth resource allocated to the terminal.
  • the information of the PH value of the first waveform and the PH of the second waveform may be reported simultaneously.
  • the method before the terminal reports the PH information of the second waveform to the RAN node, the method further includes:
  • the terminal receives the indication signaling of the RAN node, where the indication signaling is used to indicate that the terminal reports the PH of the second waveform, and the terminal reports the information of the PH of the second waveform according to the indication signaling. Or the indication signaling is used to indicate whether the terminal can report the information of the PHs of the two waveforms. When the indication information indicates that the terminal can report the information of the PH of the two waveforms, the terminal reports the information of the PH of the second waveform.
  • FIG. 8 is a schematic diagram of a PH reporting method according to an embodiment of the present application. As shown in FIG. 8, the method includes the following steps:
  • the RAN node sends a power control parameter to the terminal, where the terminal performs uplink power control.
  • power control parameters are parameters used by the terminal to calculate the PH.
  • Type 1 comprising a power control parameter M PUSCH, c (i), for determining P O_PUSCH, c (j) of P O_NOMINAL_PUSCH, c (j) and P O_UE_PUSCH, c (j), ⁇ c ( j), ⁇ TF, c (i), f c (i).
  • the RAN node here may be one or more RAN nodes, and is not limited herein.
  • the power control parameters that are configured differently for different beams (or beam groups) are called beam level power control parameters, and the power control parameters that are configured differently for different time-frequency resource configurations are called time-frequency resource configurations.
  • Level power control parameters, power control parameters that are configured differently for different waveforms are called waveform level power control parameters.
  • the RAN node is configured with P O_NOMINAL_PUSCH, c (j) and P O_UE_PUSCH, c (j), which are used to obtain P O_PUSCH, c (j), so the power control parameters are described by P O_PUSCH, c (j), and others.
  • the nominal power is similar.
  • the beam level power control parameters may, for example, include one or more of the following parameters: nominal (or reference) power P 0 (or P O ), path loss adjustment factor ⁇ , path loss PL c , power offset value ⁇ TF, c (i), power adjustment value f c (i), transmission bandwidth M c (i).
  • the time-frequency resource configuration level power control parameters include one or all of the following parameters: nominal power P 0 (or P O ), and transmission bandwidth M c (i).
  • the waveform level power control parameters include one or all of the following parameters: maximum transmit power P CMAX,c (i) or Nominal power P 0 (or P O ).
  • the RAN node sends a reference signal to the terminal.
  • the reference signal can be used for the terminal to calculate the path loss.
  • the path loss is also a power control parameter and may be different for different beams, and thus may be a beam level power control parameter.
  • the terminal can calculate the PH according to the path loss and the power control parameters configured by the RAN node.
  • the reference signal may be, for example, a CSI-RS, or a demodulation reference signal (DMRS) or the like.
  • the RAN node may send different reference signals, and the different reference signals may have the antenna port number, resource ID, signal type, and reference signal characteristics of the reference signal, such as CSI-RS resource ID, antenna port number, and time frequency. Resource location (pattern of the reference signal), or initialization seed ID generated by the pilot sequence (eg ) to distinguish.
  • the terminal measures the reference signal to obtain the path loss, and the terminal can calculate the path loss according to the difference between the transmit power of the reference signal and the reference signal received power (RSRP) of the reference signal.
  • the transmit power of the reference signal is configured by the RAN node to the terminal, and the RAN node can configure the reference signal power parameter to the terminal through high layer signaling, such as radio resource control (RRC) signaling. After receiving the parameter, the terminal knows the transmit power of the reference signal.
  • RRC radio resource control
  • the terminal When the terminal communicates with the RAN node through multiple beams, the terminal can measure multiple path losses, that is, calculate path loss on these beams respectively, so the path loss PL c can be a beam level power control parameter.
  • the mapping between the downlink resource measured by the terminal and the uplink transmission resource of the terminal may be set, so that the corresponding relationship between the path loss measured by the terminal and the uplink beam is obtained.
  • the downlink resources here are, for example, a CSI-RS resource ID, a CSI-RS antenna port, a DMRS antenna port, a codeword (CW) number, a downlink beam ID, an ID of a pilot used for beam management, and a mobile reference signal. ID, etc.
  • the uplink transmission resource herein may refer to an antenna port number, a resource number, a beam number, and the like of PUSCH ⁇ PUCCH ⁇ PRACH ⁇ SRS. The correspondence may be predefined or may be indicated by the RAN node, for example, by downlink control information (DCI) or higher layer signaling.
  • DCI downlink control information
  • the RAN node sends a configuration parameter to the terminal, where the configuration parameter indicates a correspondence between the downlink reference signal and the uplink sending resource, and the corresponding relationship is as follows:
  • the terminal receives the configuration parameter, and can obtain such a correspondence. That is, the path loss calculated by the downlink reference signal C0 corresponds to the uplink resource of D0 to D3; the path loss calculated by the downlink reference signal C1 corresponds to the uplink resource of D4 to D7. Different antenna ports (or antenna port groups) correspond to different beams, so the terminal can obtain path loss of different beams.
  • S830 The terminal calculates the PH according to the power control parameter sent by the RAN node and the measured path loss.
  • S840 The terminal reports the PHR.
  • the method for calculating the PH by the terminal and the manner for reporting the PHR are the same as those in the foregoing embodiment, and details are not described herein again.
  • the RAN node may perform a scheduling decision according to the PHR to determine whether to change the bandwidth resource allocated to the terminal.
  • the embodiment of the present application further provides an apparatus for implementing the above method, for example, providing an apparatus including a unit (or means) for implementing various steps performed by a terminal in any of the foregoing implementation methods.
  • an apparatus including means (or means) for implementing the various steps performed by the RAN node in any of the above implementation methods.
  • FIG. 9 is a schematic diagram of an apparatus according to an embodiment of the present application.
  • the apparatus 900 is for a terminal, as shown in FIG. 9, the apparatus 900 includes means or means for performing the steps performed by the terminal in any of the method embodiments of the above method, and detailed descriptions of these steps are It can be applied to the embodiment of the device.
  • the device 900 includes a computing unit 910 and a reporting unit 920, wherein the computing unit 910 is configured to calculate a PH value, and the reporting unit 920 is configured to report a PHR.
  • the calculation unit 910 is used for the calculation operation of any of FIGS. 4 to 6.
  • the reporting unit 920 can report information through an interface (for example, an air interface) between the RAN node and the terminal.
  • an interface for example, an air interface
  • the interface here is a logical concept.
  • the corresponding logical unit needs to be set to meet the protocol requirements of the corresponding interface.
  • the reporting unit 920 is a unit for controlling reporting, and can report information to the RAN node by using a sending device of the terminal, such as an antenna and a radio frequency device.
  • the apparatus 900 can further include an interface unit 930 for receiving information sent by the RAN node.
  • the terminal receives information from the RAN node through the receiving device, and the interface unit 930 receives the information sent by the RAN node to the terminal from the receiving device of the terminal for interpretation and processing. For example, the power control parameters and reference signals in FIG. 8 are received.
  • each unit of the above device is only a division of a logical function, and the actual implementation may be integrated into one physical entity in whole or in part, or may be physically separated.
  • these units may all be implemented in the form of software by means of processing component calls; they may all be implemented in the form of hardware; some units may be implemented in software in the form of processing component calls, and some units are implemented in hardware.
  • the computing unit 910 may be a separately set processing element, or may be implemented in one chip of the terminal, or may be stored in a memory in the form of a program, which is called and executed by a processing element of the terminal. The function.
  • the implementation of other units is similar.
  • all or part of these units can be integrated or implemented independently.
  • the processing elements described herein can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above units may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital) Singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA).
  • ASICs Application Specific Integrated Circuits
  • DSP digital Singnal processor
  • FPGA Field Programmable Gate Array
  • the processing element can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke the program.
  • CPU central processing unit
  • these units can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • FIG. 10 is a schematic diagram of an apparatus according to an embodiment of the present application.
  • the apparatus 1000 is for a RAN node, as shown in FIG. 10, the apparatus 1000 includes means or means for performing the steps performed by the RAN node in any of the method embodiments of the above method, and with respect to the details in these steps The description can be applied to the embodiment of the device.
  • the apparatus 1000 includes a configuration unit 1010, a transmitting unit 1020, and an interface unit 1030, wherein the configuration unit 1010 is configured to configure power control parameters, including power control parameters for calculating PH.
  • the sending unit 1020 is configured to send information to the terminal, for example, send a power control parameter and a reference signal.
  • the interface unit 1030 is configured to receive information sent by the terminal, for example, receive the PH.
  • the sending unit 1020 can send information to the terminal through an interface (for example, an air interface) between the RAN node and the terminal.
  • the interface here is a logical concept. In the implementation, the corresponding logical unit needs to be set to meet the protocol requirements of the corresponding interface.
  • the transmitting unit 1020 is a unit for controlling transmission, and can transmit information to the terminal through a transmitting device of the RAH node, such as an antenna and a radio frequency device.
  • the RAN node receives information from the terminal through the receiving device, and the interface unit 1030 receives the information transmitted by the terminal from the receiving device of the RAN node for interpretation and processing.
  • each unit of the above device is only a division of a logical function, and the actual implementation may be integrated into one physical entity in whole or in part, or may be physically separated.
  • these units may all be implemented in the form of software by means of processing component calls; or may be implemented entirely in hardware; some units may be implemented in software in the form of processing component calls, and some units may be implemented in hardware.
  • the configuration unit 1010 may be a separately set processing element, or may be implemented in one chip of the RAN node, or may be stored in a memory in the form of a program, which is called and executed by a processing element of the RAN node. The function of the unit.
  • the implementation of other units is similar.
  • each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in the processor element or an instruction in a form of software.
  • the above units may be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (digital) Singnal processor (DSP), or one or more Field Programmable Gate Array (FPGA).
  • ASICs Application Specific Integrated Circuits
  • DSP digital Singnal processor
  • FPGA Field Programmable Gate Array
  • the processing element can be a general purpose processor, such as a central processing unit (CPU) or other processor that can invoke the program.
  • CPU central processing unit
  • these units can be integrated and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the RAN node includes an antenna 1110, a radio frequency device 1120, and a baseband device 1130.
  • the antenna 1110 is connected to the radio frequency device 1120.
  • the radio frequency device 1120 receives the information transmitted by the terminal through the antenna 1110, and transmits the information transmitted by the terminal to the baseband device 1130 for processing.
  • the baseband device 1130 processes the information of the terminal and sends it to the radio frequency device 1120.
  • the radio frequency device 1120 processes the information of the terminal and sends the information to the terminal through the antenna 1110.
  • the above apparatus for the RAN node may be located in the baseband apparatus 1130.
  • the various units shown in FIG. 10 are implemented in the form of a processing element scheduling program, for example, the baseband apparatus 1130 includes processing elements 1131 and storage elements 1132, processing elements 1131 invokes a program stored by storage element 1132 to perform the method performed by the RAN node in the above method embodiments.
  • the baseband device 1130 may further include an interface 1133 for interacting with the radio frequency device 1120, such as a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the various elements shown in FIG. 10 may be one or more processing elements configured to implement the methods performed by the RAN node above, the processing elements being disposed on the baseband device 1130, where the processing elements may be An integrated circuit, such as one or more ASICs, or one or more DSPs, or one or more FPGAs, and the like. These integrated circuits can be integrated to form a chip.
  • the various units shown in FIG. 10 can be integrated together in the form of a system-on-a-chip (SOC), for example, the baseband device 1130 includes a SOC chip for implementing the above method.
  • the processing element 1131 and the storage element 1132 may be integrated in the chip, and the method executed by the above RAN node or the function of each unit shown in FIG. 10 may be implemented by the processing element 1131 in the form of a stored program of the storage element 1132; or, the chip may be Integrating at least one integrated circuit for implementing the above method performed by the RAN node or the functions of the respective units shown in FIG. 10; or, in combination with the above implementation manner, the functions of the partial units are implemented by the processing component calling program, and the functions of the partial units are It is realized in the form of an integrated circuit.
  • the above apparatus for a RAN node includes at least one processing element and storage element, wherein at least one processing element is used to perform the method performed by the RAN node provided by the above method embodiments.
  • the processing element may perform some or all of the steps performed by the RAN node in the above method embodiment in a manner of executing the program stored in the storage element in the first manner; or in a second manner: by hardware in the processor element
  • the integrated logic circuit performs some or all of the steps performed by the RAN node in the foregoing method embodiment in combination with the instructions; of course, some or all of the steps performed by the RAN node in the foregoing method embodiment may be performed in combination with the first mode and the second mode. .
  • the processing elements herein are the same as described above, and may be a general purpose processor, such as a Central Processing Unit (CPU), or may be one or more integrated circuits configured to implement the above method, for example: one or more specific An Application Specific Integrated Circuit (ASIC), or one or more digital singnal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • DSPs digital singnal processors
  • FPGAs Field Programmable Gate Arrays
  • the storage element can be a memory or a collective name for a plurality of storage elements.
  • FIG. 12 is a schematic structural diagram of a terminal according to an embodiment of the present application. It can be the terminal in the above embodiment, and is used to implement the operation of the terminal in the above embodiment.
  • the terminal includes a processing component 1210, a storage component 1220, and a transceiver component 1230.
  • the transceiver component 1230 can be coupled to an antenna.
  • the transceiver component 1230 receives the information transmitted by the RAN node through the antenna and transmits the information to the processing component 1210 for processing.
  • processing component 1210 processes the data of the terminal and transmits it to the RAN node via transceiver component 1230.
  • the storage element 1220 is for storing a program implementing the above method embodiment, and the processing element 1210 calls the program to perform the operations of the above method embodiments.
  • the various units in FIG. 9 above may be one or more processing elements configured to implement the method performed by the above terminal, the processing elements being disposed on a circuit board of the terminal, where the processing elements may be integrated Circuitry, for example: one or more ASICs, or one or more DSPs, or one or more FPGAs, etc. These integrated circuits can be integrated to form a chip.
  • the various units in FIG. 9 above may be integrated together in the form of a system-on-a-chip (SOC), for example, the terminal includes the SOC chip for implementing the above method.
  • the processing element 1210 and the storage element 1220 may be integrated in the chip, and the functions of the above methods or the above units in FIG. 9 may be implemented by the processing element 1210 in the form of a stored program calling the storage element 1220; or, at least one integration may be integrated in the chip.
  • the circuit is used to implement the functions of the above methods or the units in FIG. 9 above; or, in combination with the above implementation manner, the functions of some units are implemented by the processing element calling program, and the functions of some units are implemented by the form of an integrated circuit.
  • the above configuration apparatus includes at least one processing element and storage element, wherein at least one processing element is used to perform the method provided by the above method embodiments.
  • the processing element may perform part or all of the steps of the terminal in the above method embodiment in a manner of executing the program stored in the storage element in the first manner; or in the second manner: through the integrated logic circuit of the hardware in the processing element
  • the processing elements herein, as described above, may be general purpose processing elements, such as a Central Processing Unit (CPU), or may be one or more integrated circuits configured to implement the above methods, such as: one or more specific An Application Specific Integrated Circuit (ASIC), or one or more digital singular processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • DSP digital singular processors
  • FPGAs Field Programmable Gate Arrays
  • the storage element can be a memory or a collective name for a plurality of storage elements.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

Selon des modes de réalisation, la présente invention concerne un procédé et un dispositif de rapport de marge de puissance, l'influence d'une transmission multifaisceau, d'une attribution de ressources de fréquence multitemps, ou l'introduction d'une technologie de forme d'onde de liaison montante multiple sur la marge de puissance est considérée, ce qui permet de calculer et de rapporter plus précisément la marge de puissance, ce qui est avantageux pour améliorer une décision de planification au niveau du côté réseau et améliorer les performances de communication.
PCT/CN2018/085471 2017-05-05 2018-05-03 Procédé et dispositif de rapport de marge de puissance WO2018202083A1 (fr)

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EP18795154.6A EP3614750B1 (fr) 2017-05-05 2018-05-03 Rapport de marge de puissance
US16/673,509 US10856274B2 (en) 2017-05-05 2019-11-04 Power headroom reporting method and apparatus

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CN201710313801.7A CN108810964B (zh) 2017-05-05 2017-05-05 功率余量的上报方法和装置
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CN108810964B (zh) 2023-08-22
EP3614750B1 (fr) 2022-07-06
US20200145987A1 (en) 2020-05-07
EP3614750A1 (fr) 2020-02-26
CN108810964A (zh) 2018-11-13
EP3614750A4 (fr) 2020-04-29
US10856274B2 (en) 2020-12-01

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